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iio: buffer: use dma_buf_unmap_attachment_unlocked() helper 

Replace open-coded dma_resv_lock()/dma_resv_unlock() around
dma_buf_unmap_attachment() in iio_buffer_dmabuf_release() with the
dma_buf_unmap_attachment_unlocked() helper.

This aligns with the standard DMA-BUF API, avoids duplicating
locking logic and eases future maintenance. No functional change.

Reviewed-by: fanggeng <fanggeng@lixiang.com>
Signed-off-by: Liang Jie <liangjie@lixiang.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
pull/1354/merge
Liang Jie 2025-11-14 16:47:25 +08:00 committed by Jonathan Cameron
parent c76ba4b264
commit 0de73abe5f
1 changed files with 1 additions and 3 deletions
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4
drivers/iio/industrialio-buffer.c
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@ -1563,9 +1563,7 @@ static void iio_buffer_dmabuf_release(struct kref *ref)
struct iio_buffer *buffer = priv->buffer;
struct dma_buf *dmabuf = attach->dmabuf;
dma_resv_lock(dmabuf->resv, NULL);
dma_buf_unmap_attachment(attach, priv->sgt, priv->dir);
dma_resv_unlock(dmabuf->resv);
dma_buf_unmap_attachment_unlocked(attach, priv->sgt, priv->dir);
buffer->access->detach_dmabuf(buffer, priv->block);